My situation is a little... unique. Basically, I didn't get onto the hacking scene until after I updated my 3Ds and Smash Cart to the latest versions. But, my friend has an Old 3Ds XL running 9.2.0-20U. So, I'm using browserhax to get into homebrew, and from there, I've been following
this guide to try and hack equipment.
Thing is though, my friend's 3Ds has no Smash save on it, and as I've learned, you can't make a new save without updating to the latest version, which to my knowledge is something I cannot do without updating the firmware too. So, I've taken out the XL's SD card, and put in my own.
I successfully extracted my save with the save manager, made backups of the two files, and made equipment changes with your editor to the original files directly on my SD card. However, whenever I import that save in Save manager, turn off the XL, take out my card, and then try it out on my own 3Ds, the changes don't show up. I've tried both making new equipment in the list as well as modifying existing ones.